I think this problem is just as bad in the kitesurfing world. I can believe how many kiters tell a new guy or young person to bugger off.
It not only upsets everyone but it makes the person feel demoralised.
I often take 10min out to guve a hand to someone, if its just to have a yarn or get in the water and give a quick tip or 10 in somes cases.
I have had riders quit kiteboarding and i have seen them months latter with there heads low.
I take these people out myself and one of these guys is a verry good rider now living in oz.
Before i forced him back out in the water and befriended him he gave up on water sports etc, I asked why and his reply was he keept getting told to piss off and the agro was hard.
Now this guy is a team rider and passes the stoke on to others.
There is a tip here somwhere im sure

P.S Opps i forgot to use spell check